ZyXEL Communications ES-2024 Series, User Manual, Page: 137 / 282

ES-2024 Series User’s Guide
137
C
H A P T E R
19
Port Security
This chapter shows you how to set up port security.
19.1 Port Security Overview
Port security allows only packets with dynamically learned MAC addresses and/or configured
static MAC addresses to pass through a port on the Switch. See
Chapter 10 on page 99 for
information on configuring static MAC address forwarding.
For maximum port security, enable this feature, disable MAC address learning and configure
static MAC address(es) for a port. By default, MAC address learning is still enabled even
though the port security is not activated.
Functionally the Switch allows for three possible outcomes with port security. You can
configure the ports to:
• Forward all packets and learn all MAC addresses.
• Drop all packets from unknown MAC addresses and do not learn MAC addresses.
• Drop all packets from unknown MAC addresses and learn a limited number of MAC
addresses.
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The Switch supports five possible configurations for port security. See Section
19.3 on page 139 for supported configurations and an example.
19.2 Port Security Setup
Click Advanced Application > Port Security in the navigation panel to display the screen as
shown.